ci2 starts bisection 2023-12-28 00:59:57.088743001 +0000 UTC m=+465000.412628562 bisecting fixing commit since 471e639e59d128f4bf58000a118b2ceca3893f98 building syzkaller on f3921d4d63f97d1f1fb49a69ea85744bb7ef184b ensuring issue is reproducible on original commit 471e639e59d128f4bf58000a118b2ceca3893f98 testing commit 471e639e59d128f4bf58000a118b2ceca3893f98 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a06f2610ed76764b012f3f84248cbb08e5df1cca98677d4c318fb1268828fb63 run #0: crashed: general protection fault in create_empty_buffers run #1: crashed: general protection fault in create_empty_buffers run #2: crashed: general protection fault in create_empty_buffers run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in create_empty_buffers, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 471e639e59d128f4bf58000a118b2ceca3893f98 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bfa12cd465c8712113aaf5293005671d7f51fc1479d8fc824adb972c498a561f run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in create_empty_buffers run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: BUG: unable to handle kernel NULL pointer dereference in create_empty_buffers, types: [UNKNOWN] kconfig minimization: base=3703 full=7270 leaves diff=1988 split chunks (needed=false): <1988> split chunk #0 of len 1988 into 5 parts testing without sub-chunk 1/5 testing commit 471e639e59d128f4bf58000a118b2ceca3893f98 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3138a745baf566677ddcdb19eec1f2fe6c7309a6858cae6ecb9bc49c05491170 run #0: crashed: general protection fault in create_empty_buffers run #1: crashed: general protection fault in create_empty_buffers run #2: crashed: general protection fault in create_empty_buffers run #3: crashed: general protection fault in create_empty_buffers run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in create_empty_buffers, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 testing commit 471e639e59d128f4bf58000a118b2ceca3893f98 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1036cf053439416b6aaf17fbcf59a331b35dd8c5fbaa72d3c1cc14ab02e88e72 run #0: crashed: general protection fault in create_empty_buffers run #1: crashed: general protection fault in create_empty_buffers run #2: crashed: general protection fault in create_empty_buffers run #3: crashed: general protection fault in create_empty_buffers run #4: crashed: general protection fault in create_empty_buffers run #5: crashed: general protection fault in create_empty_buffers run #6: OK run #7: crashed: general protection fault in create_empty_buffers run #8: OK run #9: OK run #10: crashed: general protection fault in create_empty_buffers run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in create_empty_buffers, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 testing commit 471e639e59d128f4bf58000a118b2ceca3893f98 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f9f71ec040500abc897f2c391f8d793d9231b505d8e4617eb0c088b157a02ff5 all runs: OK false negative chance: 0.039 testing without sub-chunk 4/5 testing commit 471e639e59d128f4bf58000a118b2ceca3893f98 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 44f9b575ed23c2f32a52133d2aa8f4524ec7973c3f73b0c4c2d0ba175e3b6d30 run #0: crashed: general protection fault in create_empty_buffers run #1: crashed: general protection fault in create_empty_buffers run #2: crashed: general protection fault in create_empty_buffers run #3: crashed: general protection fault in create_empty_buffers run #4: crashed: general protection fault in create_empty_buffers run #5: crashed: general protection fault in create_empty_buffers run #6: crashed: general protection fault in create_empty_buffers run #7: crashed: general protection fault in create_empty_buffers run #8: crashed: general protection fault in create_empty_buffers run #9: crashed: general protection fault in create_empty_buffers run #10: crashed: general protection fault in create_empty_buffers run #11: crashed: general protection fault in create_empty_buffers run #12: crashed: general protection fault in create_empty_buffers run #13: crashed: general protection fault in create_empty_buffers run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in create_empty_buffers, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 testing commit 471e639e59d128f4bf58000a118b2ceca3893f98 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b7ca3fea393f40b90441dd3df241788ce76b7c02394f43317d6bdc3854fae940 run #0: crashed: general protection fault in create_empty_buffers run #1: crashed: general protection fault in create_empty_buffers run #2: crashed: general protection fault in create_empty_buffers run #3: crashed: general protection fault in create_empty_buffers run #4: crashed: general protection fault in create_empty_buffers run #5: crashed: general protection fault in create_empty_buffers run #6: crashed: general protection fault in create_empty_buffers run #7: crashed: general protection fault in create_empty_buffers run #8: crashed: general protection fault in create_empty_buffers run #9: crashed: general protection fault in create_empty_buffers run #10: crashed: general protection fault in create_empty_buffers run #11: crashed: general protection fault in create_empty_buffers run #12: crashed: general protection fault in create_empty_buffers run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in create_empty_buffers, types: [UNKNOWN] the chunk can be dropped minimized to 398 configs; suspects: [ATM AX25 BRIDGE BRIDGE_NETFILTER CAN CFG80211 CHECKPOINT_RESTORE DVB_CORE FB FSCACHE HAMRADIO HSR INFINIBAND INFINIBAND_ADDR_TRANS INFINIBAND_USER_ACCESS INPUT_JOYSTICK INPUT_MOUSE IP6_NF_RAW IPV6_MULTIPLE_TABLES IP_NF_RAW IP_SET IP_VS ISDN ISDN_CAPI_MIDDLEWARE JFFS2_CMODE_PRIORITY JFFS2_COMPRESSION_OPTIONS JFFS2_FS JFFS2_FS_POSIX_ACL JFFS2_FS_SECURITY JFFS2_FS_WRITEBUFFER JFFS2_FS_XATTR JFFS2_LZO JFFS2_RTIME JFFS2_RUBIN JFFS2_SUMMARY JFFS2_ZLIB JFS_DEBUG JFS_FS JFS_POSIX_ACL JFS_SECURITY JOYSTICK_IFORCE JOYSTICK_IFORCE_USB JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KARMA_PARTITION KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL KEYS_REQUEST_CACHE KEY_DH_OPERATIONS KEY_NOTIFICATIONS KSM KVM KVM_AMD KVM_ASYNC_PF KVM_COMPAT KVM_GENERIC_DIRTYLOG_READ_PROTECT KVM_INTEL KVM_MMIO KVM_VFIO KVM_XEN KVM_XFER_TO_GUEST_WORK L2TP L2TP_ETH L2TP_IP L2TP_V3 LAPB LAPBETHER LDM_PARTITION LEDS_TRIGGER_AUDIO LEGACY_PTYS LIBNVDIMM LINEAR_RANGES LLC LLC2 LOGIG940_FF LOGIRUMBLEPAD2_FF LOGO LOGO_LINUX_MONO LOGO_LINUX_VGA16 LPC_ICH LWTUNNEL LWTUNNEL_BPF LZ4HC_COMPRESS LZ4_COMPRESS MAC80211 MAC80211_DEBUGFS MAC80211_HAS_RC MAC80211_HWSIM MAC80211_MESH MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MACSEC MACVLAN MACVTAP MAC_PARTITION MAPPING_DIRTY_HELPERS MD_LINEAR MD_MULTIPATH MD_RAID0 MD_RAID1 MD_RAID10 MD_RAID456 MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_CONTROLLER MEDIA_CONTROLLER_DVB MEDIA_CONTROLLER_REQUEST_API MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_SDR_SUPPORT MEDIA_SUPPORT MEDIA_SUPPORT_FILTER MEDIA_TUNER MEDIA_TUNER_MSI001 MEDIA_TUNER_XC2028 MEDIA_TUNER_XC5000 MEMORY_BALLOON MEMORY_HOTPLUG MEMORY_HOTPLUG_DEFAULT_ONLINE MEMORY_ISOLATION MEMREGION MEMSTICK MEMSTICK_REALTEK_USB MEM_SOFT_DIRTY MFD_CORE MFD_SYSCON MHI_BUS MHI_WWAN_CTRL MHP_MEMMAP_ON_MEMORY MICROCHIP_PHY MINIX_FS MINIX_SUBPARTITION MISC_RTSX MISC_RTSX_USB MISDN MISDN_DSP MISDN_HFCUSB MISDN_L1OIP MKISS MLX4_CORE MLX4_INFINIBAND MMC MMC_REALTEK_USB MMC_USHC MMC_VUB300 MMU_NOTIFIER MODULE_SRCVERSION_ALL MODVERSIONS MOST MOUSE_APPLETOUCH MOUSE_BCM5974 MOUSE_PS2 MOUSE_PS2_ALPS MOUSE_PS2_BYD MOUSE_PS2_CYPRESS MOUSE_PS2_FOCALTECH MOUSE_PS2_LIFEBOOK MOUSE_PS2_LOGIPS2PP MOUSE_PS2_SMBUS MOUSE_PS2_SYNAPTICS MOUSE_PS2_SYNAPTICS_SMBUS MOUSE_PS2_TRACKPOINT MOUSE_SYNAPTICS_USB MPLS MPLS_IPTUNNEL MPLS_ROUTING MPTCP MPTCP_IPV6 MRP MTD MTD_BLKDEVS MTD_BLOCK MTD_BLOCK2MTD MTD_CFI_I1 MTD_CFI_I2 MTD_MAP_BANK_WIDTH_1 MTD_MAP_BANK_WIDTH_2 MTD_MAP_BANK_WIDTH_4 MTD_MTDRAM MTD_PHRAM MTD_SLRAM MUSB_PIO_ONLY ND_BLK ND_BTT ND_CLAIM ND_PFN NETDEVSIM NETFILTER_ADVANCED NETFILTER_FAMILY_ARP NETFILTER_FAMILY_BRIDGE NETFILTER_NETLINK_ACCT NETFILTER_NETLINK_GLUE_CT NETFILTER_NETLINK_OSF NETFILTER_NETLINK_QUEUE NETFILTER_SYNPROXY NETFILTER_XT_CONNMARK NETFILTER_XT_MATCH_BPF NETFILTER_XT_MATCH_CGROUP NETFILTER_XT_MATCH_CLUSTER NETFILTER_XT_MATCH_COMMENT NETFILTER_XT_MATCH_CONNBYTES NETFILTER_XT_MATCH_CONNLABEL NETFILTER_XT_MATCH_CONNLIMIT NETFILTER_XT_MATCH_CONNMARK NETFILTER_XT_MATCH_CPU NETFILTER_XT_MATCH_DCCP NETFILTER_XT_MATCH_DEVGROUP NETFILTER_XT_MATCH_DSCP NETFILTER_XT_MATCH_ECN NETFILTER_XT_MATCH_ESP NETFILTER_XT_MATCH_HASHLIMIT NETFILTER_XT_MATCH_HELPER NETFILTER_XT_MATCH_HL NETFILTER_XT_MATCH_IPCOMP NETFILTER_XT_MATCH_IPRANGE NETFILTER_XT_MATCH_IPVS NETFILTER_XT_MATCH_L2TP NETFILTER_XT_MATCH_LENGTH NETFILTER_XT_MATCH_LIMIT NETFILTER_XT_MATCH_MAC NETFILTER_XT_MATCH_MARK NETFILTER_XT_MATCH_MULTIPORT NETFILTER_XT_MATCH_NFACCT NETFILTER_XT_MATCH_OSF NETFILTER_XT_MATCH_OWNER NETFILTER_XT_MATCH_PHYSDEV NETFILTER_XT_MATCH_PKTTYPE NETFILTER_XT_MATCH_QUOTA NETFILTER_XT_MATCH_RATEEST NETFILTER_XT_MATCH_REALM NETFILTER_XT_MATCH_RECENT NETFILTER_XT_MATCH_SCTP NETFILTER_XT_MATCH_SOCKET NETFILTER_XT_MATCH_STATISTIC NETFILTER_XT_MATCH_STRING NETFILTER_XT_MATCH_TCPMSS NETFILTER_XT_MATCH_TIME NETFILTER_XT_MATCH_U32 NETFILTER_XT_SET NETFILTER_XT_TARGET_AUDIT NETFILTER_XT_TARGET_CHECKSUM NETFILTER_XT_TARGET_CLASSIFY NETFILTER_XT_TARGET_CONNMARK NETFILTER_XT_TARGET_CT NETFILTER_XT_TARGET_DSCP NETFILTER_XT_TARGET_HL NETFILTER_XT_TARGET_HMARK NETFILTER_XT_TARGET_IDLETIMER NETFILTER_XT_TARGET_LED NETFILTER_XT_TARGET_MARK NETFILTER_XT_TARGET_NETMAP NETFILTER_XT_TARGET_NFQUEUE NETFILTER_XT_TARGET_NOTRACK NETFILTER_XT_TARGET_RATEEST NETFILTER_XT_TARGET_REDIRECT NETFILTER_XT_TARGET_TCPOPTSTRIP NETFILTER_XT_TARGET_TEE NETFILTER_XT_TARGET_TPROXY NETFILTER_XT_TARGET_TRACE NETFS_SUPPORT NETLABEL NETLINK_DIAG NETROM NET_9P_RDMA NET_ACT_BPF NET_ACT_CONNMARK NET_ACT_CSUM NET_ACT_CT NET_ACT_CTINFO NET_ACT_GATE NET_ACT_IFE NET_ACT_IPT NET_ACT_MPLS NET_ACT_NAT NET_ACT_PEDIT NET_ACT_POLICE NET_ACT_SAMPLE NET_ACT_SIMP NET_ACT_SKBEDIT NET_ACT_SKBMOD NET_ACT_TUNNEL_KEY NET_ACT_VLAN NET_CLS_BASIC NET_CLS_BPF NET_CLS_CGROUP NET_CLS_FLOW NET_CLS_FLOWER NET_CLS_FW NET_CLS_MATCHALL NET_CLS_ROUTE4 NET_CLS_RSVP NET_CLS_RSVP6 NET_DEVLINK NET_DROP_MONITOR NET_DSA NET_DSA_TAG_BRCM NET_DSA_TAG_BRCM_COMMON NET_DSA_TAG_BRCM_PREPEND NET_DSA_TAG_MTK NET_DSA_TAG_QCA NET_DSA_TAG_RTL4_A NET_EGRESS NET_EMATCH_CANID NET_EMATCH_CMP NET_EMATCH_IPSET NET_EMATCH_IPT NET_EMATCH_META NET_EMATCH_NBYTE NET_EMATCH_TEXT NET_EMATCH_U32 NET_FC NET_FOU NET_FOU_IP_TUNNELS NET_IFE NET_IFE_SKBMARK NET_IFE_SKBPRIO NET_IFE_SKBTCINDEX NET_IPGRE NET_IPGRE_BROADCAST NET_IPGRE_DEMUX NET_IPIP NET_IPVTI NET_KEY NET_KEY_MIGRATE NET_L3_MASTER_DEV NET_MPLS_GSO NET_NCSI NET_NSH NET_REDIRECT NET_SCH_ATM NET_SCH_CAKE NET_SCH_CBQ NET_SCH_CBS NET_SCH_CHOKE NET_SCH_CODEL NET_SCH_DRR NET_SCH_DSMARK NET_SCH_ETF NET_SCH_ETS NET_SCH_FQ NET_SCH_FQ_CODEL NET_SCH_FQ_PIE NET_SCH_GRED NET_SCH_HFSC NET_SCH_HHF NET_SCH_HTB NET_SCH_INGRESS NET_SCH_MQPRIO NET_SCH_MULTIQ NET_SCH_NETEM NET_SCH_PIE NET_SCH_PLUG NET_SCH_PRIO NET_SCH_QFQ NET_SCH_RED NET_SCH_SFB NET_SCH_SFQ NET_SCH_SKBPRIO NET_SCH_TAPRIO NET_SCH_TBF NET_SCH_TEQL NET_SOCK_MSG NET_SWITCHDEV NET_TC_SKB_EXT NET_TEAM NET_TEAM_MODE_ACTIVEBACKUP NET_TEAM_MODE_BROADCAST NET_TEAM_MODE_LOADBALANCE NET_TEAM_MODE_RANDOM NET_TEAM_MODE_ROUNDROBIN NET_UDP_TUNNEL NET_VRF NFC NFC_DIGITAL NFC_FDP NFC_HCI NFC_MRVL NFC_MRVL_USB NFC_NCI NFC_NCI_UART NFC_PN533 NFC_PN533_USB NFC_PORT100 NFC_SHDLC NFC_SIM NFC_VIRTUAL_NCI NFSD NFSD_BLOCKLAYOUT NFSD_FLEXFILELAYOUT NFSD_PNFS NFSD_SCSILAYOUT NFSD_V2_ACL NFSD_V3 NFSD_V3_ACL NFSD_V4 NFSD_V4_2_INTER_SSC NFSD_V4_SECURITY_LABEL NFS_FSCACHE NFS_V4_1 NFS_V4_2 NFS_V4_2_READ_PLUS NFS_V4_2_SSC_HELPER NFS_V4_SECURITY_LABEL NFT_BRIDGE_META NFT_BRIDGE_REJECT NFT_COMPAT NFT_CONNLIMIT NFT_COUNTER NFT_CT NFT_DUP_IPV4 NFT_DUP_IPV6 NFT_DUP_NETDEV NFT_FIB NFT_FIB_INET NFT_FIB_IPV4 NFT_FIB_IPV6 NFT_FIB_NETDEV NFT_FLOW_OFFLOAD NFT_HASH NFT_LIMIT NFT_LOG NFT_MASQ NFT_NAT NFT_NUMGEN NFT_OBJREF NFT_OSF NFT_QUEUE NFT_QUOTA NFT_REDIR NFT_REJECT NFT_REJECT_INET NFT_REJECT_IPV4 NFT_REJECT_IPV6 NFT_REJECT_NETDEV NFT_SOCKET NFT_SYNPROXY NFT_TPROXY NFT_TUNNEL NFT_XFRM NF_CONNTRACK_AMANDA NF_CONNTRACK_BRIDGE NF_CONNTRACK_BROADCAST NF_CONNTRACK_EVENTS NF_CONNTRACK_H323 NF_CONNTRACK_LABELS NF_CONNTRACK_MARK NF_CONNTRACK_NETBIOS_NS NF_CONNTRACK_PPTP NF_CONNTRACK_SANE NF_CONNTRACK_SNMP NF_CONNTRACK_TFTP NF_CONNTRACK_TIMEOUT NF_CONNTRACK_TIMESTAMP NF_CONNTRACK_ZONES NF_CT_NETLINK_HELPER NF_CT_NETLINK_TIMEOUT NF_CT_PROTO_DCCP NF_CT_PROTO_GRE NF_CT_PROTO_SCTP NF_CT_PROTO_UDPLITE NF_DUP_IPV4 NF_DUP_IPV6 NF_DUP_NETDEV NF_FLOW_TABLE NF_FLOW_TABLE_INET NF_FLOW_TABLE_IPV4 NF_FLOW_TABLE_IPV6 NF_NAT_AMANDA NF_NAT_H323 NF_NAT_PPTP NF_NAT_REDIRECT NF_NAT_SNMP_BASIC NF_NAT_TFTP NF_SOCKET_IPV4 NF_SOCKET_IPV6 NF_TABLES NF_TABLES_ARP NF_TABLES_BRIDGE NF_TABLES_INET NF_TABLES_IPV4 NF_TABLES_IPV6 NF_TABLES_NETDEV NF_TPROXY_IPV4 NF_TPROXY_IPV6 NILFS2_FS NLMON NLS_CODEPAGE_1250 NLS_CODEPAGE_1251 NLS_CODEPAGE_737 PARTITION_ADVANCED PSAMPLE RFKILL SPI USB_GADGET USB_MUSB_HDRC VIDEO_DEV VIDEO_V4L2 WAN WATCH_QUEUE WIRELESS WLAN WWAN X25 X86_X32] determining the merge base between 471e639e59d128f4bf58000a118b2ceca3893f98 and f5837722ffecbbedf1b1dbab072a063565f0dad1 8bb7eca972ad531c9b149c0a51ab43a417385813/Linux 5.15 is a merge base, check if it has the bug testing commit 8bb7eca972ad531c9b149c0a51ab43a417385813 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5b5b1ecbe8a71c4c1724193abf49bf65399f544e8008fb45d2c1647ec3fb0ceb run #0: crashed: general protection fault in create_empty_buffers run #1: crashed: general protection fault in create_empty_buffers run #2: crashed: general protection fault in create_empty_buffers run #3: crashed: general protection fault in create_empty_buffers run #4: crashed: general protection fault in create_empty_buffers run #5: crashed: general protection fault in create_empty_buffers run #6: crashed: general protection fault in create_empty_buffers run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: crashed: general protection fault in create_empty_buffers run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in create_empty_buffers, types: [UNKNOWN] testing current HEAD f5837722ffecbbedf1b1dbab072a063565f0dad1 testing commit f5837722ffecbbedf1b1dbab072a063565f0dad1 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3f78da6c5788a1cc6be53127fcc8807bc6dc46b1a119a8c42883d27d0b266c5a all runs: OK false negative chance: 0.000 # git bisect start f5837722ffecbbedf1b1dbab072a063565f0dad1 8bb7eca972ad531c9b149c0a51ab43a417385813 Bisecting: 95258 revisions left to test after this (roughly 17 steps) [edd4e25a230dc8a977fca667db788424917ca2f3] Merge tag 'wireless-next-2022-12-02' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit edd4e25a230dc8a977fca667db788424917ca2f3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d1974ba91e51778bc41c97ab35e1dd57acc4b43be0f499728a3536d05b99a7a8 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: general protection fault in create_empty_buffers run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: general protection fault in create_empty_buffers run #6: crashed: general protection fault in create_empty_buffers run #7: crashed: general protection fault in create_empty_buffers run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: general protection fault in create_empty_buffers run #10: crashed: general protection fault in create_empty_buffers run #11: crashed: general protection fault in create_empty_buffers run #12: crashed: general protection fault in create_empty_buffers run #13: crashed: general protection fault in create_empty_buffers run #14: crashed: general protection fault in create_empty_buffers run #15: crashed: general protection fault in create_empty_buffers run #16: crashed: general protection fault in create_empty_buffers run #17: OK run #18: crashed: general protection fault in create_empty_buffers run #19: OK representative crash: general protection fault in create_empty_buffers, types: [UNKNOWN] # git bisect good edd4e25a230dc8a977fca667db788424917ca2f3 Bisecting: 47634 revisions left to test after this (roughly 16 steps) [d8aa21235d0342e6d0cc99f37d0771749e742e5a] Merge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit d8aa21235d0342e6d0cc99f37d0771749e742e5a gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 7a77ae9a8fe8d2b679cf1fa84c5519d0b35f485a47355d71f2840f3f0572d72d run #0: crashed: general protection fault in folio_create_empty_buffers run #1: crashed: general protection fault in folio_create_empty_buffers run #2: crashed: general protection fault in folio_create_empty_buffers run #3: crashed: general protection fault in folio_create_empty_buffers run #4: crashed: general protection fault in folio_create_empty_buffers run #5: crashed: general protection fault in folio_create_empty_buffers run #6: crashed: general protection fault in folio_create_empty_buffers run #7: crashed: general protection fault in folio_create_empty_buffers run #8: crashed: general protection fault in folio_create_empty_buffers run #9: crashed: general protection fault in folio_create_empty_buffers run #10: crashed: general protection fault in folio_create_empty_buffers run #11: crashed: general protection fault in folio_create_empty_buffers run #12: crashed: general protection fault in folio_create_empty_buffers run #13: crashed: general protection fault in folio_create_empty_buffers run #14: crashed: general protection fault in folio_create_empty_buffers run #15: crashed: general protection fault in folio_create_empty_buffers run #16: crashed: general protection fault in folio_create_empty_buffers run #17: crashed: general protection fault in folio_create_empty_buffers run #18: crashed: general protection fault in folio_create_empty_buffers run #19: OK representative crash: general protection fault in folio_create_empty_buffers, types: [UNKNOWN] # git bisect good d8aa21235d0342e6d0cc99f37d0771749e742e5a Bisecting: 23801 revisions left to test after this (roughly 15 steps) [e925992671907314b7db6793a28eb39b36bc21a4] Merge tag 'staging-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit e925992671907314b7db6793a28eb39b36bc21a4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5076df7fb8603f9bec9d20f43f98535d0fe7f153cac161e021a1213901630b2c all runs: OK false negative chance: 0.000 # git bisect bad e925992671907314b7db6793a28eb39b36bc21a4 Bisecting: 11920 revisions left to test after this (roughly 14 steps) [7fcd473a6455450428795d20db7afd2691c92336] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 7fcd473a6455450428795d20db7afd2691c92336 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d02bfd3938a2fd2b09a8a7133fd55faad610eee495226207f7720cddca6df536 run #0: crashed: general protection fault in folio_create_empty_buffers run #1: crashed: general protection fault in folio_create_empty_buffers run #2: crashed: general protection fault in folio_create_empty_buffers run #3: crashed: general protection fault in folio_create_empty_buffers run #4: crashed: general protection fault in folio_create_empty_buffers run #5: crashed: general protection fault in folio_create_empty_buffers run #6: crashed: general protection fault in folio_create_empty_buffers run #7: OK run #8: OK run #9: crashed: general protection fault in folio_create_empty_buffers run #10: crashed: general protection fault in folio_create_empty_buffers run #11: OK run #12: OK run #13: crashed: general protection fault in folio_create_empty_buffers run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in folio_create_empty_buffers, types: [UNKNOWN] # git bisect good 7fcd473a6455450428795d20db7afd2691c92336 Bisecting: 5709 revisions left to test after this (roughly 13 steps) [bd6c11bc43c496cddfc6cf603b5d45365606dbd5] Merge tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next determine whether the revision contains the guilty commit revision edd4e25a230dc8a977fca667db788424917ca2f3 crashed and is reachable testing commit bd6c11bc43c496cddfc6cf603b5d45365606dbd5 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0ce2f3e3e23b3ab5be33b0b00bdf03bbb582f30e9b80b63e98e5a9577404ee8b all runs: OK false negative chance: 0.000 # git bisect bad bd6c11bc43c496cddfc6cf603b5d45365606dbd5 Bisecting: 3105 revisions left to test after this (roughly 12 steps) [670f08971c0635275b25756a25a5d0b8d1831536] Merge tag 'tag-chrome-platform-for-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux determine whether the revision contains the guilty commit revision edd4e25a230dc8a977fca667db788424917ca2f3 crashed and is reachable testing commit 670f08971c0635275b25756a25a5d0b8d1831536 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1364b9106a59b7982eee7c24420f5b50d163ca6dd29833096393beb9b83f2ffd all runs: OK false negative chance: 0.000 # git bisect bad 670f08971c0635275b25756a25a5d0b8d1831536 Bisecting: 1528 revisions left to test after this (roughly 11 steps) [25aa0bebba72b318e71fe205bfd1236550cc9534] Merge tag 'net-6.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net determine whether the revision contains the guilty commit revision edd4e25a230dc8a977fca667db788424917ca2f3 crashed and is reachable testing commit 25aa0bebba72b318e71fe205bfd1236550cc9534 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2dd31f648f0802c1e0dffabde56b7040f2988f09847bf5c400f583eaa79d8247 run #0: crashed: general protection fault in folio_create_empty_buffers run #1: crashed: general protection fault in folio_create_empty_buffers run #2: crashed: general protection fault in folio_create_empty_buffers run #3: crashed: general protection fault in folio_create_empty_buffers run #4: crashed: general protection fault in folio_create_empty_buffers run #5: crashed: general protection fault in folio_create_empty_buffers run #6: crashed: general protection fault in folio_create_empty_buffers run #7: crashed: general protection fault in folio_create_empty_buffers run #8: crashed: general protection fault in folio_create_empty_buffers run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in folio_create_empty_buffers, types: [UNKNOWN] # git bisect good 25aa0bebba72b318e71fe205bfd1236550cc9534 Bisecting: 747 revisions left to test after this (roughly 10 steps) [615e95831ec3d428cc554ac12e9439e2d66038d3] Merge tag 'v6.6-vfs.ctime' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs determine whether the revision contains the guilty commit revision edd4e25a230dc8a977fca667db788424917ca2f3 crashed and is reachable testing commit 615e95831ec3d428cc554ac12e9439e2d66038d3 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3f20f4e11043c6aaac5d61c0357db13bd0676ad2d987c0afc9f5f08bf06ff926 all runs: OK false negative chance: 0.000 # git bisect bad 615e95831ec3d428cc554ac12e9439e2d66038d3 Bisecting: 390 revisions left to test after this (roughly 9 steps) [ce03e1807c1f71abcba185e6052cbef250600514] Merge tag 'sound-6.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit ce03e1807c1f71abcba185e6052cbef250600514 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e300f9f2ac0f14470195dc22bf6ec64769e886dc019a9931114719abc8d22b0c run #0: crashed: general protection fault in folio_create_empty_buffers run #1: crashed: general protection fault in folio_create_empty_buffers run #2: crashed: general protection fault in folio_create_empty_buffers run #3: crashed: general protection fault in folio_create_empty_buffers run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in folio_create_empty_buffers, types: [UNKNOWN] # git bisect good ce03e1807c1f71abcba185e6052cbef250600514 Bisecting: 199 revisions left to test after this (roughly 8 steps) [4f9e7fabf8643003afefc172e62dd276686f016e] Merge tag 'trace-v6.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace determine whether the revision contains the guilty commit revision 25aa0bebba72b318e71fe205bfd1236550cc9534 crashed and is reachable testing commit 4f9e7fabf8643003afefc172e62dd276686f016e gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6b4b2ad546cd5af000901f065694049cf7a7135175f663bf992e67099865f67a run #0: crashed: general protection fault in folio_create_empty_buffers run #1: crashed: general protection fault in folio_create_empty_buffers run #2: crashed: general protection fault in folio_create_empty_buffers run #3: crashed: general protection fault in folio_create_empty_buffers run #4: crashed: general protection fault in folio_create_empty_buffers run #5: crashed: general protection fault in folio_create_empty_buffers run #6: crashed: general protection fault in folio_create_empty_buffers run #7: crashed: general protection fault in folio_create_empty_buffers run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in folio_create_empty_buffers, types: [UNKNOWN] # git bisect good 4f9e7fabf8643003afefc172e62dd276686f016e Bisecting: 99 revisions left to test after this (roughly 7 steps) [6f4aaee3faa84f00d38bfaba88a9f75d8c78e7e0] fat: make fat_update_time get its own timestamp determine whether the revision contains the guilty commit revision edd4e25a230dc8a977fca667db788424917ca2f3 crashed and is reachable testing commit 6f4aaee3faa84f00d38bfaba88a9f75d8c78e7e0 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 97e149f2df3b29eb39b5157578e04d6c92f59dc0c9185cc2f57beac24ba5897e run #0: crashed: general protection fault in folio_create_empty_buffers run #1: crashed: general protection fault in folio_create_empty_buffers run #2: crashed: general protection fault in folio_create_empty_buffers run #3: crashed: general protection fault in folio_create_empty_buffers run #4: crashed: general protection fault in folio_create_empty_buffers run #5: crashed: general protection fault in folio_create_empty_buffers run #6: crashed: general protection fault in folio_create_empty_buffers run #7: crashed: general protection fault in folio_create_empty_buffers run #8: crashed: general protection fault in folio_create_empty_buffers run #9: crashed: general protection fault in folio_create_empty_buffers run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in folio_create_empty_buffers, types: [UNKNOWN] # git bisect good 6f4aaee3faa84f00d38bfaba88a9f75d8c78e7e0 Bisecting: 40 revisions left to test after this (roughly 6 steps) [6f0edbb833ec16ab2042073af4846152b455104d] Merge tag 'mm-hotfixes-stable-2023-08-25-11-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm determine whether the revision contains the guilty commit revision 25aa0bebba72b318e71fe205bfd1236550cc9534 crashed and is reachable testing commit 6f0edbb833ec16ab2042073af4846152b455104d gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 45850dbf44c5ef0ecdcdd1803aa2f6a3f7d47aedc60a5441b78d3f66b97306fe all runs: OK false negative chance: 0.000 # git bisect bad 6f0edbb833ec16ab2042073af4846152b455104d Bisecting: 26 revisions left to test after this (roughly 5 steps) [a87eaffbb26b810d50769272effbe6747e1e3ea4] Merge tag 'pinctrl-v6.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl determine whether the revision contains the guilty commit revision 25aa0bebba72b318e71fe205bfd1236550cc9534 crashed and is reachable testing commit a87eaffbb26b810d50769272effbe6747e1e3ea4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 08631f8cc4f3fd4c3ed6f74d397038807f37c4d9b619623f084332deb5499fc9 run #0: crashed: general protection fault in folio_create_empty_buffers run #1: crashed: general protection fault in folio_create_empty_buffers run #2: crashed: general protection fault in folio_create_empty_buffers run #3: crashed: general protection fault in folio_create_empty_buffers run #4: crashed: general protection fault in folio_create_empty_buffers run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in folio_create_empty_buffers, types: [UNKNOWN] # git bisect good a87eaffbb26b810d50769272effbe6747e1e3ea4 Bisecting: 13 revisions left to test after this (roughly 4 steps) [20b18aada1856b2ce0512b087a8681342af73e60] madvise:madvise_free_huge_pmd(): don't use mapcount() against large folio for sharing check determine whether the revision contains the guilty commit revision edd4e25a230dc8a977fca667db788424917ca2f3 crashed and is reachable testing commit 20b18aada1856b2ce0512b087a8681342af73e60 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f76bed1bb8496dee6be8f22e147a718a7a0b4e4a95b4559e256ce72cd71fefc9 all runs: OK false negative chance: 0.001 # git bisect bad 20b18aada1856b2ce0512b087a8681342af73e60 Bisecting: 6 revisions left to test after this (roughly 3 steps) [f83913f8c5b882a312e72b7669762f8a5c9385e4] nilfs2: fix general protection fault in nilfs_lookup_dirty_data_buffers() determine whether the revision contains the guilty commit revision d8aa21235d0342e6d0cc99f37d0771749e742e5a crashed and is reachable testing commit f83913f8c5b882a312e72b7669762f8a5c9385e4 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 1002c446b1e705c59fbde4e21848930997895c64963e848276f4477d185d77c7 all runs: OK false negative chance: 0.001 # git bisect bad f83913f8c5b882a312e72b7669762f8a5c9385e4 Bisecting: 2 revisions left to test after this (roughly 2 steps) [49b0638502da097c15d46cd4e871dbaa022caf7c] mm: enable page walking API to lock vmas during the walk determine whether the revision contains the guilty commit revision 7fcd473a6455450428795d20db7afd2691c92336 crashed and is reachable testing commit 49b0638502da097c15d46cd4e871dbaa022caf7c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0c2f338dc37451746973d3504fda5698a932f03bb63eae30c80ae70f1210a2c9 run #0: crashed: general protection fault in folio_create_empty_buffers run #1: crashed: general protection fault in folio_create_empty_buffers run #2: crashed: general protection fault in folio_create_empty_buffers run #3: crashed: general protection fault in folio_create_empty_buffers run #4: crashed: general protection fault in folio_create_empty_buffers run #5: crashed: general protection fault in folio_create_empty_buffers run #6: crashed: general protection fault in folio_create_empty_buffers run #7: crashed: general protection fault in folio_create_empty_buffers run #8: crashed: general protection fault in folio_create_empty_buffers run #9: crashed: general protection fault in folio_create_empty_buffers run #10: crashed: general protection fault in folio_create_empty_buffers run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in folio_create_empty_buffers, types: [UNKNOWN] # git bisect good 49b0638502da097c15d46cd4e871dbaa022caf7c Bisecting: 0 revisions left to test after this (roughly 1 step) [5805192c7b7257d290474cb1a3897d0567281bbc] mm/gup: handle cont-PTE hugetlb pages correctly in gup_must_unshare() via GUP-fast determine whether the revision contains the guilty commit revision 8bb7eca972ad531c9b149c0a51ab43a417385813 crashed and is reachable testing commit 5805192c7b7257d290474cb1a3897d0567281bbc gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0095abec06409ad702997003ef0ee7d200e8e2b15c069de1134257c7cc2796fb run #0: crashed: general protection fault in folio_create_empty_buffers run #1: crashed: general protection fault in folio_create_empty_buffers run #2: crashed: general protection fault in folio_create_empty_buffers run #3: crashed: general protection fault in folio_create_empty_buffers run #4: crashed: general protection fault in folio_create_empty_buffers run #5: crashed: general protection fault in folio_create_empty_buffers run #6: crashed: general protection fault in folio_create_empty_buffers run #7: crashed: general protection fault in folio_create_empty_buffers run #8: OK run #9: OK run #10: OK run #11: OK run #12: OK run #13: OK run #14: OK run #15: OK run #16: OK run #17: OK run #18: OK run #19: OK representative crash: general protection fault in folio_create_empty_buffers, types: [UNKNOWN] # git bisect good 5805192c7b7257d290474cb1a3897d0567281bbc f83913f8c5b882a312e72b7669762f8a5c9385e4 is the first bad commit commit f83913f8c5b882a312e72b7669762f8a5c9385e4 Author: Ryusuke Konishi Date: Sat Aug 5 22:20:38 2023 +0900 nilfs2: fix general protection fault in nilfs_lookup_dirty_data_buffers() A syzbot stress test reported that create_empty_buffers() called from nilfs_lookup_dirty_data_buffers() can cause a general protection fault. Analysis using its reproducer revealed that the back reference "mapping" from a page/folio has been changed to NULL after dirty page/folio gang lookup in nilfs_lookup_dirty_data_buffers(). Fix this issue by excluding pages/folios from being collected if, after acquiring a lock on each page/folio, its back reference "mapping" differs from the pointer to the address space struct that held the page/folio. Link: https://lkml.kernel.org/r/20230805132038.6435-1-konishi.ryusuke@gmail.com Signed-off-by: Ryusuke Konishi Reported-by: syzbot+0ad741797f4565e7e2d2@syzkaller.appspotmail.com Closes: https://lkml.kernel.org/r/0000000000002930a705fc32b231@google.com Tested-by: Ryusuke Konishi Cc: Signed-off-by: Andrew Morton fs/nilfs2/segment.c | 5 +++++ 1 file changed, 5 insertions(+) accumulated error probability: 0.00 culprit signature: 1002c446b1e705c59fbde4e21848930997895c64963e848276f4477d185d77c7 parent signature: 0095abec06409ad702997003ef0ee7d200e8e2b15c069de1134257c7cc2796fb reproducer is flaky (0.30 repro chance estimate) revisions tested: 26, total time: 5h40m48.236355924s (build: 1h22m45.20149228s, test: 4h9m4.806955282s) first good commit: f83913f8c5b882a312e72b7669762f8a5c9385e4 nilfs2: fix general protection fault in nilfs_lookup_dirty_data_buffers() recipients (to): ["akpm@linux-foundation.org" "konishi.ryusuke@gmail.com"] recipients (cc): []